When the unregistered user looks at the main welcome page, they can see
the
content, but the black-to-grey styling is broken (I'm using the NightFall colours with Colibri skin).
If you want unregistered user to see main page then it should have the right to do so, main page is not in XWiki space so if you removed view right globally it's not going to work unless you give view right on Main space of Main.WebHome page itself.
I gave the unregistered user View access to Main.WebHome, AND to the Main space, however the styling is still broken. The frame around the text is just grey instead of the black-grey gradient.
thanks, Paul
Further to this, the problem is that an unregistered user does not have permission to access the link: http://host.com/xwiki/download/ColorThemes/Nightfall/bg8x540.jpg